| 武汉市大气干湿沉降中溶解态黑碳的季节分布特征 |
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| 引用本文： | 白冰冰,洪军,李思思,刘佳,郭孟如,黄颖,孔少飞.武汉市大气干湿沉降中溶解态黑碳的季节分布特征[J].地球化学,2021,50(1):46-55. |
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| 作者姓名： | 白冰冰 洪军 李思思 刘佳 郭孟如 黄颖 孔少飞 |
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| 作者单位： | 中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074;中国地质大学(武汉) 环境学院, 湖北 武汉 430074 |
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| 基金项目： | 国家重点基础研究发展计划 |
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| 摘 要： | 本研究采集了武汉市城区2018年3月至2019年2月的大气总沉降及湿沉降样品,使用苯多羧酸法测定溶解态黑碳含量,并结合气象条件分析溶解态黑碳沉降通量季节变化特征及其影响因素。结果表明,总沉降中溶解态黑碳月浓度范围为0.12~0.83 mg/L,均值为0.40 mg/L,湿沉降溶解态黑碳浓度范围为0.04~0.18 mg/L,均值为0.10 mg/L;溶解态黑碳总沉降和湿沉降年通量分别为269 mg·m?2·a?1和65 mg·m?2·a?1。溶解态黑碳总沉降通量季节变化为春季>冬季>夏季>秋季,湿沉降通量季节变化为冬季>春季>夏季>秋季。溶解态黑碳湿沉降通量主要受降雨量影响,而总沉降通量除受降雨量影响外还受风速、风向和空气质量等因素的共同影响。
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| 关 键 词： | 溶解态黑碳 溶解性有机碳 干湿沉降 季节分布 |
Seasonal distribution of dissolved black carbon in wet and dry deposition in Wuhan |
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| BAI Bing-bing,HONG Jun,LI Si-si,LIU Jia,GUO Meng-ru,HUANG Ying,KONG Shao-fei.Seasonal distribution of dissolved black carbon in wet and dry deposition in Wuhan[J].Geochimica,2021,50(1):46-55. |
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| Authors: | BAI Bing-bing HONG Jun LI Si-si LIU Jia GUO Meng-ru HUANG Ying KONG Shao-fei |
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| Institution: | (China University of Geosciences(Wuhan),School of Environment,Wuhan 430074,China) |
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| Abstract: | In this study,we collected the samples of total sedimentation and wet sedimentation in the urban area of Wuhan from March 2018 to February 2019,measured the dissolved black carbon content by the benzene polycarboxylic acid method,and analyzed the seasonal variation of dissolved black carbon sedimentation fluxes as well as its influencing factors.Results showed that the monthly concentration of the total dissolved black carbon deposition was 0.12-0.83 mg/L(average of 0.40 mg/L),and the wet deposition of dissolved black carbon concentration varied in the range of 0.04-0.18 mg/L(average of 0.10 mg/L).The annual sedimentation fluxes of total dissolved black carbon sedimentation and wet sedimentation were 269 and 65 mg·m?2·a?1,respectively.Its total deposition exhibited a seasonal variation as spring>winter>summer>autumn,which was impacted by wind speed and direction,air quality,and rainfall.The wet deposition fluxes of dissolved black carbon exhibited a seasonal variation as winter>spring>summer>autumn,which was mainly affected by rainfall. |
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| Keywords: | dissolved black carbon dissolve organic carbon wet and dry deposition seasonal distribution |
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